wireless: fix enabling channel 12 for custom regulatory domain
Commit e33e2241e2
("Revert "cfg80211: Use 5MHz bandwidth by
default when checking usable channels"") fixed a broken
regulatory (leaving channel 12 open for AP where not permitted).
Apply a similar fix to custom regulatory domain processing.
Signed-off-by: Cathy Luo <xiaohua.luo@nxp.com>
Signed-off-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Link: https://lore.kernel.org/r/1576836859-8945-1-git-send-email-ganapathi.bhat@nxp.com
[reword commit message, fix coding style, add a comment]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
02a6144996
commit
c4b9d655e4
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@ -2261,14 +2261,15 @@ static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
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static void handle_channel_custom(struct wiphy *wiphy,
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struct ieee80211_channel *chan,
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const struct ieee80211_regdomain *regd)
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const struct ieee80211_regdomain *regd,
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u32 min_bw)
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{
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u32 bw_flags = 0;
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const struct ieee80211_reg_rule *reg_rule = NULL;
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const struct ieee80211_power_rule *power_rule = NULL;
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u32 bw;
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for (bw = MHZ_TO_KHZ(20); bw >= MHZ_TO_KHZ(5); bw = bw / 2) {
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for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
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reg_rule = freq_reg_info_regd(MHZ_TO_KHZ(chan->center_freq),
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regd, bw);
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if (!IS_ERR(reg_rule))
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@ -2324,8 +2325,14 @@ static void handle_band_custom(struct wiphy *wiphy,
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if (!sband)
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return;
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/*
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* We currently assume that you always want at least 20 MHz,
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* otherwise channel 12 might get enabled if this rule is
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* compatible to US, which permits 2402 - 2472 MHz.
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*/
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for (i = 0; i < sband->n_channels; i++)
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handle_channel_custom(wiphy, &sband->channels[i], regd);
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handle_channel_custom(wiphy, &sband->channels[i], regd,
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MHZ_TO_KHZ(20));
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}
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/* Used by drivers prior to wiphy registration */
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